On headline fees, yes, investing yourself avoids the 0.5% to 1% a year an adviser charges, so a DIY portfolio can cost under 0.5% all-in versus 1.5% to 2% advised. But that saving only counts if you would have made the same decisions. Costly mistakes often dwarf the fee saved.
The short answer
- DIY avoids the 0.5%–1% adviser fee, a real saving, worth £1,000s a year on a large pot.
- You still pay platform and fund charges either way; only the advice layer is saved.
- For simple, confident investors, DIY is often the better-value choice.
On the face of it the answer is clearly yes: if you invest yourself you avoid the adviser fee entirely, and that fee, typically 0.5% to 1% of your portfolio every year, is the single largest controllable cost of investing. A disciplined DIY investor using a low-cost platform and index funds can bring their total charges below 0.5% a year, against 1.5% to 2% for a fully advised, actively managed portfolio. Over decades, compounded, that gap is real money. This is general information, not personal advice.
But “cheaper on fees” and “better off overall” are not the same question, and conflating them is how people talk themselves into a false economy. The fee is only a saving if you would otherwise have paid it for nothing: that is, if you would have made every one of the same good decisions on your own.
DIY versus advised, the honest comparison
What DIY saves you
- The 0.5%–1% a year adviser fee
- Any initial set-up fee on a new plan
- Full control over every decision and trade
- No ongoing review charge for a service you may not need
What an adviser can add
- Tax wrappers and allowances used in the right order
- A steady hand that stops panic-selling in a crash
- Complex decisions, DB transfers, drawdown, IHT, done right
- Behavioural discipline, often the biggest driver of returns
The everyday costs, the platform fee and the fund charges, are paid by everyone, DIY or advised, so they are not part of the saving. The only cost you actually remove by going it alone is the advice layer itself. Our answer on what platform fees are breaks down those underlying charges, and the fees and costs hub sets the whole picture side by side.
When DIY genuinely wins
For many people, DIY is the right call. If your situation is straightforward: you are steadily paying into an ISA or pension, you are comfortable with markets, and you can hold your nerve when they fall, then paying 1% a year for advice you would not really use is poor value. A simple low-cost global index fund inside a tax wrapper is a perfectly sound plan, and doing it yourself keeps every pound of the fee working for you.
Which route tends to suit whom
| Your situation | Often best | Why |
|---|---|---|
| Simple ISA/pension saving, confident investor | DIY | Little for an adviser to add; the fee is a real saving |
| Large or complex portfolio, tax planning needed | Advised | One good decision can outweigh years of fees |
| Approaching or in retirement, drawing income | Advised | Drawdown, tax and longevity risk are easy to get wrong |
| Nervous in downturns, prone to tinkering | Advised | Behavioural coaching often pays for itself |
The mistake that dwarfs the fee
Studies of investor behaviour repeatedly find that the biggest destroyer of returns is not fees but bad timing, selling low in a panic and buying back high. Avoiding one such mistake in a career can outweigh a lifetime of adviser fees. That, not stock-picking, is where advice most often earns its cost.
Tax is the other place a DIY saving can quietly evaporate. Using your £20,000 ISA allowance and £60,000 pension annual allowance in the right order, harvesting capital gains against the annual exemption, and drawing retirement income tax-efficiently are all things a good adviser does almost automatically, and any one of them mishandled can cost more than a year’s fee. The same goes for the big, irreversible calls: a defined-benefit pension transfer (where regulated advice is legally required above £30,000), or planning around the frozen £325,000 inheritance-tax nil-rate band with unused pensions coming into the IHT net from April 2027. These are precisely the moments a DIY investor is most exposed.
So the sharpest way to put it is this: DIY is cheaper on fees, but advice can be cheaper on mistakes. The right answer depends on how complex your finances are, how confident you are, and how you behave when markets turn. If your affairs are simple, keep the fee. If they are not, a defined-benefit transfer, retirement income, inheritance-tax planning, the value of getting it right usually exceeds the cost of advice. Our guide to whether a financial adviser is worth it helps you judge which camp you are in.
If you decide advice is worth it, the free Vetted Wealth service matches you with independently vetted, FCA-regulated advisers across investment management and the wider Devon and Cornwall networks, so you only pay a fee where it genuinely buys you value. This is information and a matching service, not personal advice, and investments can fall as well as rise.
In summary
- DIY avoids the 0.5%–1% adviser fee, a real saving, worth £1,000s a year on a large pot.
- You still pay platform and fund charges either way; only the advice layer is saved.
- For simple, confident investors, DIY is often the better-value choice.
- For complex needs or nervous investors, one avoided mistake can outweigh years of fees.
- Cheaper on fees is not the same as better off overall: this is information, not personal advice.
Sources and further reading
- Financial adviser charges MoneyHelper
- Retail Distribution Review Financial Conduct Authority
Read the full guide
For the complete picture, see our in-depth guide: How to Reduce the Cost of Financial Advice.
Speak to a vetted financial advisers specialist
This is free information, not personal advice. When you’re ready, we’ll match you with an independently vetted, FCA-regulated specialist, free, and with no obligation.
